Focus On Her Cock.

Cocks cum faster and more easily than pussies, by and large. You can't afford to divide your attention here. You make your choice, swallow her remaining cum, and get back to work on her cock.

It's awkward in this position but you manage to do a serviceable job of sliding her down your throat. Her moans certainly seem to suggest you're doing well.

But Heather isn't just lying around either. Well, she is, but she's doing it while also flicking her tongue across your pussy like a paddle boat. How is she going so fast?

You redouble your efforts but cum from her tongue lashing a second before she explodes in your mouth again.

You suck hard on her head and she does the same to your clit. Fuck, it feels good! But you have to hold on...

You feel something on your dick. It's her hand! Somehow she's gotten it free and now she's stroking your cock while she suckles on your clit! That's not fair!

You moan and spasm several seconds before she does the same. You can't swallow all her cum and have to spit much of it out. This gives her an even greater lead and it's a full minute after your next orgasm before she cums again, this time onto your face to avoid what happened last time.

Slowly but surely the tide turns against you. By the time it's over you're both panting and sweating like you've just gone ten rounds. Your ears buzz and your head grows lighter and lighter until you pass out.